Avalanche forecast for Indre Troms Thursday 2019-02-14

3
Considerable
Published:

Be careful in areas with newly deposited wind slabs. Persistent weak layers can be present where the snow cover is thin. Wet avalanches can occur where the percipitation comes as rain.

Wind drifted snow (slab avalanches)

Poor bonding between layers in wind deposited snow

Avoid steep (more than 30 degrees) areas with fresh wind deposited snow, especially convex terrain. An avalanche is easier to trigger where wind slabs are thin or soft. Look for areas where the wind recently has deposited snow, typically behind ridges, ribs and in gullies. Remember that local wind effects will cause variation in where the wind slabs occur.
2 - Medium
Low additional load
Many steep slopes
Possible

Wet snow (slab avalanches)

Water pooling in/above snow layers

Avoid avalanche release and run out areas. Wet snow avalanches tend to release spontaneously. Stability decreases when the snow surface gets wet and soft. Timing is important.
3 - Large
Spontaneous release
Some steep slopes
Possible

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow beneath a crust

Avoid skiing in avalanche terrain (steep terrain more than 30 degrees and in runout zones). NB, remote triggering is likely. Make very conservative route choices, especially in unknown terrain, after snowfall and if temperatures rise. Identifying areas where the weak layer is present might be difficult and requires experience. Danger signs are whoumpf-sounds, cracking and recent avalanches. However, absence of signs does not mean it is safe.
2 - Medium
High additional load
Isolated steep slopes
Possible

What are avalanche problems?

21 mm precipitation, up to 42 mm in the most exposed areas.
Strong breeze from south., change to gale from the west during the evening.
-10 °C to -2 °C at 1100 m a.s.l.
Plus degrees up to 600 m a.s.l. during the afternoon.
Cloudy.

For updated info, please visit yr.no
2 mm precipitation.
Strong breeze from southeast., change to fresh breeze from the south during the evening.
-12 °C to -3 °C at 1100 m a.s.l.
Plus degrees up to 200 m a.s.l. during the evening.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Rapportert av: Jonas.hansen@live.no (***)

i kommune: BARDU

Weather

Rain

Rapportert av: StianS@forsvaret (***)

i kommune: BARDU

Dangersign

Large snowfall

Område: Generelt på fjellet. Beskrivelse:

Coloumn test

Poor

ECTPV@10cmQ2

Coloumn test

Not given

ECTP11@40cmQ2

Dangersign

Recent snowdrift

Dangersign

Quick temperature change

Område: Generelt på fjellet. Beskrivelse:

Snow profile

Antall Lag: 8

Total dybde: 108,50 cm

Click here for pictures and the full observation

Rapportert av: bjorgnar (Unknown)

i kommune: BALSFJORD

Snow cover

190 cm snødybde

45 cm nysnø siste døgn

Coloumn test

Not given

CTM11@60cmQ1

Click here for pictures and the full observation

Rapportert av: bjorgnar (Unknown)

i kommune: BALSFJORD

Dangersign

Recently made avalanches

Område: I denne fjellsiden. Beskrivelse: Ferskt skred. Ser ut til å ha gått i de øverste 40-50 cm med innblåst nysnø

Click here for pictures and the full observation

Rapportert av: StianS@forsvaret (***)

i kommune: BARDU

Avalanche problems

Buried weak layer of new snow

Notes

Fersk vindtransportert snø har dannet et fokksnølag på mellom 15-25cm i sør- og østvendte heng. Under ligger det rester av nysnøen fra i går som lett går til brudd med liten tilleggsbelastning. Får utslag på 1. slag på 3 av 4 ECT-er med propagering på samtlige.

Dangersign

Recent snowdrift

Område: I denne fjellsiden. Beskrivelse:

Coloumn test

Poor

CTE1@20cmQ2

Coloumn test

Poor

ECTP1@20cmQ2

Snow profile

Antall Lag: 6

Total dybde: 143,50 cm

Weather

Snow

Click here for pictures and the full observation

Rapportert av: StianS@forsvaret (***)

i kommune: BARDU

Snow cover

90 cm snødybde

25 cm nysnø siste døgn

Notes

Mye nedbør som har lagt seg i hele fjellet, med enkelte perioder lett snøfokk gjennom dagen. Nå ligger det store mengder snø tilgjengelig for transport, og mange le-heng har bygd opp store fonner allerede.

Dangersign

Large snowfall

Område: Generelt på fjellet. Beskrivelse: Stort snøfall siste døgnet med lett snøfokk med vind fra vest. Rundt 25cm nysnø generelt under skoggrensa og oppbygging av skavler over 1 meter i leheng, spesielt i tilknytning til bekkedaler og juv.

Click here for pictures and the full observation

Rapportert av: torben@obskorps (***)

i kommune: BALSFJORD

Avalanche problems

Buried weak layer of faceted snow beneath a crust

Snow cover

100 cm snødybde

Coloumn test

Medium

ECTP16@45cmQ2

The bulletin does not include a detailed text about the avalanche conditions. This is only given in Norwegian. Translate it using google translate if you like. The text result will be informative, and most likely amusing

For planning your trip and recognizing avalanche terrain, use maps.

Norway has 1:50 000 maps for the whole country. Maps can be bought at bookstores and sports shops, or printed from the net.

Visit www.ut.no for topographic maps online. For slope angle maps, see NGI slope angel maps ("helning" means slope angle).

Modelled snowpack and historic and current weather information can be found on the webpage senorge.no. This site uses information from the weather stations and interpolate values from the stations for gridded maps.

Detailed weather forecast can be found online at www.yr.no or www.storm.no. Yr.no is also in English, but the weather in text format is only given in Norwegian.